I'm permanently banned from the Play Store because 10+ years ago I made a third-party Omegle client, called it Yo-megle (neither Omegle nor Yo-megle still exist now), got a bunch of downloads and good ratings, then about 2 years later got a message from Google saying I was banned for violating trademark law. No actual legal action, just a message from Google. I suppose I'm lucky they didn't delete my entire Google account.